Syndiotactic-specific polymerization of styrene: catalyst structure and polymerization mechanism |
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Authors: | Pellecchia Claudio Grassi Alfonso |
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Affiliation: | (1) Dipartimento di Chimica, Università di Salerno, I-84081 Baronissi (SA), Italy |
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Abstract: | The mechanistic investigation of syndiotactic-specific polymerization of styrene is reviewed, mainly with reference to the
research work carried out at the University of Salerno. NMR analysis of the stereochemical structure of s-PS macromolecules,
in some cases suitably labelled, provided valuable information concerning the regiochemistry of polyinsertion, the type of
addition to the monomer double bond, and the model of stereospecific propagation. Kinetic studies and spectroscopic investigation
of the catalytic systems suggested a cationic Ti(III) complex with a strongly π-co-ordinated benzyl-type growing chain as
the true active species.
This revised version was published online in June 2006 with corrections to the Cover Date. |
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Keywords: | syndiotactic polystyrene Ziegler– Natta catalysts |
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